JP2511425Y2 - Clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an anti-vibration rubber device for interposing between a motor, which is a drive unit of a clothes dryer, and its mounting base.

2. Description of the Related Art Recently, there has been an increasing demand for reducing noise during use of electric appliances used for home use, and many improvements have been made in terms of product design. In the drum type clothes dryer, the drive unit is composed of a rotary drum that stores and stirs clothes, and a fan that is located at the rear of the drum and has a function of blowing heated air to the drum. Is to be driven and rotated. The motor is fixed to the device body by attaching both ends of the motor body to the motor base via annular vibration-proof rubber, and further fixing the motor base to the device body.

The function of the anti-vibration rubber is, firstly, to prevent the rotational vibration of the motor itself from propagating to the equipment body, and to reduce vibration or noise from the equipment body. Secondly, to the drum and fan. A support function that secures the axial distance between the motor and the drum and fan while always receiving the tension of the stretched belt, and at the same time reliably holds the heavy motor even if it falls during transportation or handling. There are two.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, in order to reduce the vibration and noise during operation by prioritizing the first anti-vibration function and preventing the vibration propagation to the device body. Is to reduce the static spring constant of the anti-vibration rubber as much as possible, and ideally to be zero. However, it is practically difficult because the second supporting function cannot be satisfied by itself, and the conventional anti-vibration rubber has a drawback that it cannot sufficiently perform the above two functions at the same time.

The present invention solves such a conventional problem,
An object of the present invention is to provide a clothes dryer in which vibration and noise during operation of the device are reduced by using an anti-vibration rubber having an improved anti-vibration effect without impairing the fixing strength of the motor to the device body.

Means for Solving the Problems In order to achieve the above object, the present invention provides a rotating drum rotatably supported in an outer casing, a fan for introducing hot air for drying into the rotating drum, and a fan at one end, The other end is provided with a motor that axially supports and drives a rotating drum via a belt, and the motor is configured to be fixed to a motor base by motor supporting members having annular elasticity at both ends thereof. The member is configured such that an annular member made of metal or synthetic resin is covered with upper and lower multilayer elastic bodies in the radial direction of the motor.

Action The source of vibration and noise during operation of the clothes dryer is the motor, and the main component of the vibration is the rotation direction of the rotor,
Especially the frequency that is an integral multiple of the power supply frequency to be used, so-called 2f
It is a sound. Therefore, in order to prevent the vibration in the rotation direction, it is necessary to reduce the spring constant in the rotation direction. On the other hand, the tension of the belt that drives the drum and the fan is constantly applied to the motor shaft, and in order to support this constantly, it is necessary to firmly fix the motor shaft in the radial direction with a large spring constant.

According to the present invention having the above-mentioned structure, for example, when the rubber layer which is an elastic body is doubled from the conventional one, the metal or synthetic resin annular member which is a rigid body against the twisting force in the rotation direction of the motor is It can move integrally with the rubber layers on both sides, and the thickness of the rubber layer is doubled to reduce the spring constant. On the other hand, with respect to the tension of the belt applied in the radial direction, since the rubber layers on both sides receive a compressive force by the annular member made of a rigid metal or synthetic resin, the decrease of the spring constant can be suppressed.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1 showing the overall structure of the clothes dryer, 1 is a main body of the clothes dryer, and 2 is a rotary drum which is rotatably supported in the main body 1 and driven by a motor 3 and a drum belt 4. 5 is a clothes inlet provided on the front surface of the main body 1, 6
Is a heater for heating the drying air flowing into the rotary drum 2, 7 is a heat exchange type fan disposed behind the rotary drum 2 and driven by the motor 3 and the fan belt 8. The heat exchange type fan 7 is It has a function of blowing heated circulating air inside and outside the main body 1, and also has a function of exchanging heat inside and outside the main body 1. Reference numeral 9 denotes a casing, which forms a circulation path and a cooling path for the flow of air discharged from the front and back surfaces of the heat exchange fan 7. Reference numeral 10 is a filter for removing lint and the like installed on the rear surface of the rotating drum 2, 11 is a back plate that covers the rear surface of the main body 1, and 12 is a cooling side intake port for sucking the outside air for cooling to the cooling side of the heat exchange type fan 7. , A part of the back plate 11. Reference numeral 12 denotes a circulation duct, which constitutes an air passage for guiding the exhaust gas on the circulation side of the casing 9 to the heater 6. Reference numeral 13 denotes a drain port formed in a part of the circulation duct 12 for discharging condensed water generated by the heat exchange action of the heat exchange type fan 7.

In the above configuration, when the clothes dryer shown in FIG. 1 is operated, the high temperature and high humidity heated circulating air in the rotary drum 2 is cooled and heat-exchanged by the heat exchange type fan 7,
Moisture in the air is condensed. On the other hand, the air in the rotary drum 2 dehumidified as described above is heated by the heater 6 and then introduced into the rotary drum 2 again. By repeating the above operation cycle, the rotary drum 2 Drying of the clothes contained inside progresses.

Here, the motor 3 to the device body 1 which is the main part of the present invention
The mounting structure of the above, particularly the structure of the vibration isolator will be described with reference to FIGS. 2 and 3.

Reference numeral 14 is a metal motor base fixed to the device body 1 with screws or the like. A flange portion 15 formed by a part of the motor base 14 supports a lower portion of an annular vibration-proof rubber 16. Reference numeral 17 denotes a metal band which is fixed to the flange portion 15 of the motor base 14 so as to cover the anti-vibration rubber 16 from above. Reference numeral 18 is a fan pulley for transmitting rotation to the fan 7 via a fan belt 8, and 19 is a drum pulley for transmitting rotation to the drum 2 via a belt 4.

Here, the anti-vibration rubber 16 includes an inner annular member 16a that abuts both ends 20 of the motor 3 and a flange portion 15 of the motor base 14.
It is made of two layers of elastic body of the annular member 16b that abuts against
A rigid annular member made of metal or synthetic resin at the boundary
16c are inserted, and each boundary is vulcanized and bonded to form one body.

The operation of the rubber cushion 16 in the above configuration will be described. First, when the motor shaft 21 rotates, its reaction force causes the annular member 16a, which abuts against both ends 20 of the motor body 3, to receive rotational vibration around the motor shaft 21 at an integral multiple of the power supply frequency. The annular member 16c, which is a rigid body against this rotational vibration, has a rubber layer 16a on both sides.
And 16b, the spring constant can be reduced to about half by making the rubber layer twice as thick as the conventional one.
On the other hand, with respect to the tension in the radial direction applied to the motor shaft 21 by the fan belt 8 and the drum belt 4, the rubber layers on both sides receive a compressive force by the annular member that is a rigid body, so that the decrease in the spring constant thereof should be reduced. You can As a result, it is possible to enhance the vibration isolation effect and reduce vibration and noise during operation of the device without impairing the strength of fixing the motor to the device body.

As described above, according to the present invention, only the rotational vibration of the motor can be reduced and the noise due to the vibration of the device body can be reduced without impairing the fixing strength of the motor to the motor base.

Effect of the Invention As is clear from the above description of the embodiments, according to the clothes dryer of the present invention, the annular vibration-proof rubber that supports the both ends of the motor is multi-layered, and the rigid annular member is provided at the boundary. By integrally forming by vulcanization adhesion or the like, it is possible to enhance the vibration damping effect against vibration in the rotation direction of the motor. On the other hand, with respect to the tension from the fan belt or drum belt, the spring constant can be maintained even if the thickness of the anti-vibration rubber is increased, the axial distance between the motor shaft and the fan and drum can be secured, and the impact force applied during transportation prevents the motor from moving. Can be prevented from falling off.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a clothes dryer showing an embodiment of the present invention, FIG. 2 is a side sectional view of a main part of the clothes dryer, and FIG. 3 is a vertical section of a main part of the clothes dryer. It is a side view. 1 ... Main body (exterior body), 2 ... Rotary drum, 3 ... Motor, 4 ... Drum belt, 7 ... Fan, 8 ... Fan belt, 16 ... Vibration isolating rubber (motor support member), 16c ......
An annular member made of metal or synthetic resin.

Claims (1)

(57) [Scope of utility model registration request] 1. A rotary drum rotatably supported in an outer casing, a fan for introducing hot air for drying into the rotary drum, a fan at one end and a rotary drum at the other end, which are axially supported by belts, respectively. A motor for driving is provided, and the motor is fixed to the motor base by motor supporting members having annular elasticity at both ends thereof, and the motor supporting member is made of metal or synthetic resin in the radial direction of the motor. A clothes dryer having a structure in which an annular member is covered with upper and lower multilayer elastic bodies.